大型会展建筑雨水管网SWMM模型设计应用研究  

Study on SWMM model application on design of storm water network of an exhibition center

作　　者：王昊 王蒙蒙 雷天 杜晓亮 刘群 Wang Hao;Wang Mengmeng;Lei Tian;Du Xiaoliang;Liu Qun(National Engineering Research Center of Building Technology,Beijing 100013,China;China Academy of Building Research,Beijing 100013,China;China Merchants Real Estate(Hangzhou)Co.Ltd,Hangzhou 310020,China)

机构地区：[1]国家建筑工程技术研究中心,北京100013 [2]中国建筑科学研究院有限公司,北京100013 [3]招商局地产(杭州)有限公司,浙江杭州310020

出　　处：《建筑科学》2022年第5期187-195,共9页Building Science

摘　　要：本文结合某大型会展建筑工程设计案例,建立雨水管网SWMM模型,在建模过程中采用HORTON方法建立下垫面雨水下渗模型,采用了芝加哥法建立降雨过程模型;提出了用于SWMM模型的该地区120min降雨过程,以及该工程的雨水管网模型。利用SWMM模型结果模拟指导工程设计方案的优化,并利用该模型验证设计方案对规划建设指标的满足情况和内涝风险校核。研究结果表明:(1)建立设计雨水管网的SWMM模型,对管网参数做分析排查和试算,是设计阶段优化雨水管网设计方案和验证规划建设指标的有效方法;(2)采用HORTON方法的雨水下渗量较传统公式法小,需提高雨水管道的输送能力和雨水调蓄设施容积;(3)降雨过程线对雨水调蓄设施容积的影响很大,雨峰靠后、雨峰附近降雨量集中导致调蓄容积增大。Combined with the design case of an exhibition center project,the SWMM model of stormwater network is established.In the modeling process,the Horton method is used to establish the rainwater infiltration model of the underlying surface,the Chicago method is applied to establish the storm process model.The 120min rainfall process in the city for SWMM model and the stormwater network model of the project are proposed.The results of SWMM model are simulated to guide the optimization of the design scheme,and the model is used to verify the satisfaction of the design scheme to the planning indicators and measure flooding risk.The results show that:(1)establishing SWMM model for designing stormwater network and checking the network parameters are effective methods to optimize the design stormwater network and verify the planning indicators in the design stage;(2)the amount of rainwater infiltration by Horton method is smaller than that by traditional formula method,so it is necessary to improve the transmission capacity of stormwater network and the volume of rainwater storage facilities;(3)rainfall hydrograph has a great impact on the volume of rainwater storage facilities.A late storm peak and the concentration of rainfall near the storm peak leads to the increase of storage volume.

关 键 词：SWMM模型 雨水管网 设计模拟 会展建筑 

分 类 号：TU992[建筑科学—市政工程]